Improved cooking-stove



2 Sheets-Sheet 2.

'A. S. MARKHAM.

Cooking Stove.

Patented" Nov. 29, I864.

3TH mu n lrrron.

A. S. MARKHAM, OF BUSHNELL, ILLINOIS.

IMPROVED COOKING QFOVE.

Specification forming part of Letters Patent No. amass, dated November.29, 1864. I

.T 0 aZZ whom it may concern:

Be it known that I, A. S. MARKHAM, of Bushnell, in the county ofMcDonough and State of Illinois, have invented a new and usefulImprovement in Cooking-Stoves; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable those skilled in the art to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which- Figure 1 represents a cook-stove to which myimprovements are applied, the stove being tilted to show the levers andattachments beneath the bottom plate. Fig. 2 is a plan view of thestove, the fireplace being open to show the woodgrate in place. Fig. 3is a sectional elevation of the stove taken 011 the line .70 of Fig. 2.Fig. 4 shows one of the rods bywhich the coal grate is elevated. 5 is aplan of the coal-grate inverted. Fig. 6 is a cross-sec tion thereof.Fig. 7 is a plan view of the wood-grate inverted. Fig. 8 is across-section thereof.

Similar letters of reference indicate corresponding parts.

This invention consists in so constructing grates for cooking and otherstoves as to enable one to raise and lower them at pleasure. The devicesemployed make the principle applicable to both coal and wood grates, andthe dumping of the grate is provided for when the coal-grate is used.

A is the stove, to which my improvements are here shown as applied.

G is the fire-chamber. The ash-door is not shown, but may be of theusual construction. The oven extends beneath the fire-chamber. Anopening is made in the center of the bot tom of the fire-chamber in aline with like openings in the oven plate or plates below and in thebottom plate of the stove. A tube, h, open at both ends, is fitted inthese openings, rising a short distance above the bottom of thefire-chamber, so that ashes will not be deposited therein and so escapeto the floor below. Like tubes, 2', are placed at each end of the firechamber. A rod, g, firmly attached to the bottom of the woodgrate J onthe center of its middle bar, extends downward through the tube h, beingattached below the bottom of the stove to a horizontal lever, c, by

a movable pin. The lever O is jointed to the bottom plate of the stovenear its end and its handle projects beyond its front plate. The lever Gcan be held in any position by means of a slotted foot, 0, projectingdownward from the bottom plate of the stove in front of the tube h,within whose slot its end moves vertically, being secured therein at anyheight by means of a stay-pin, 6.

When it is desired to elevate the wood-grate, it is only necessary toraise the lever O and fasten it by means of the pin 0, which enters intoholes in the sides of the slotted foot 0.

When it is desired to take the wood-grate out of the stove, the rod 9 isdisconnected from the lever G and raised, with the grate, out of the topof the fire-chamber.

Rods a are fitted in the side tubes, 1', their form being shown in Fig.4. Troughs t are set vertically in the tubes 1', being soldered alongtheir bottoms or convex surfaces to the sides of the stove within thetubes t, thus presenting their open sides toward the fireohamher. Thefiat rods slide up before their open sides when they are raised, ashereinafter mention ed. Their lower ends, which project below the stove,are connected by a rod, 1), which is rigidlysecured to the lever C, sothat they are raised and lowered thereby in like manner with the rod 9.

The coal-grate, represented at 0, has arms 1) extending from each end.These arms turn down, as seen in Fig. 3, so that when the grate vibrateson its arms it shall not be dumped, by reason that the ends of thejournals strike against the sides of the trough t; but when the rods toare raised so high that the journals are clear of the trough the grateis free to be dumped. The rods a are out down at their tops at s to formbearings for the journals 1).

The operation of the stove needs no explanation further than is givenabove, saving to state that when the grate, whichever one may be used,is raised toward the vessel exposed to the fire less fuel need be usedthan when the grate lies low. Economy in the consumption of fuel isthereby brought about and less heat is thrown into the apartment, whichin summer is an item of importance.

I do not claim the raising and lowering of grates in stoves, as, I amaware, that is old and well known; but

Having thus described my invention, what down as described, incombination with the I claim as new, and desire to secure by Lettubes2', the troughs t, and the sliding rods a, ters Patent, isconnecting-rodb, and lever O, substantially as l. The wood-grate J and its rod g, incomand for the purpose above described. bination with the tube h, leverO, and slotted A. S. MARKHAM. foot 0, constructed and operatedsubstantially Witnesses: as and for the purpose above described. 1). M.WYGKOFF,

2. The coal-grate, with its journals p bent O. D. HENDRICKSON.

